Packing box



SepL,2'9, 1925. 1 1,555,182

' J. C. BULIS PACKING BOX Filed July 5, 1924 ii atented Sept. 29, 1925.

UNlTED STATES JOHN 0. Burns, or TOLEDO, OHIO.

PACKING BOX.

Application filed July 3,

To ((ZZ whom it may concern:

Be it known that 1, JOHN C. BULIs,'a citizen of the United-States, and a resident of Toledo, in the county of Lucas and State of @hio. have invented a new and useful {aching Box, which invention is fully described in the following specification.

My invention has for its object to provide a box formed of composite board comprising c' rrugatet paper located between plane paper that will be exceedingly durable and will withstand the wear and tear to which such boxes are subjected when used as packboxes for shipping purposes. The in- :ntion particularly has for its object to provide a simple means for reinforcing the corner top and bottom edges where the flaps bend, that form the tops and bottoms of the b xes. Thus by my invention are provided boxes that may be handled flat and may be readily set up to box form by positioning the end flaps to form the bottoms of the boxes. The boxes may then be packed and closed by closing the flaps so as to form the tops of the boxes. The flaps that form the bottoms and the tops of the boxes may be secured in position by suitable cementitious material.

The invention may be containedin boxes of different forms and still be within the purv ew of the novelty of my invention. To ill trate a practical application of the inrer ion I have selected a box containing the in vention as an example of such boxes, and shall describe it hereinafter. The box selected is shown in the accompanying drawings.

Figure l is a broken view of a part of the composite board of which the box is formed to illustrate the construction of the board. Figure 2 is a sectional view of a corner of the box. Figure 3 illustrates an edge view of a portion of the box to show the scored hinge line between a side of the box and one of the flaps. Figure :lis a perspective view looking into the box.

The composite or corrugated board is formed of corrugated paper 1 located between layers of plane or smooth paper 2 and secured thereto at the ridges of the corrugations of the corrugated paper by cementitious material. In the formation of the box, the layers of paper, in more or less moist condition, are fed together between hot rollers and as the layers of paper pass the rollers they are heated and smoothed and united to form a substantially integral board and 1924. Serial No. 723,866.

sides of the box to prevent cracking of the paper, particularly the outerplane or smooth paper that forms the outerside of the box, when the flaps are bent to form the top and bottom of the box. In order to reinforce the corners of the box where the flaps join the sides and where the box is subjected to the scoring operations that must be sufficiently severe in order to permit free flexing movement of the flaps relative to the sides a great number of times, the plane paper that forms the inside surface paper of the box is fed in strips during the formation of the composite board, the strips being so located and their widths being such that their edges will overlap and so as to be located on opposite sides of the score lines of the box.

As shown in the drawings, the plane paper that covers the corrugated paper and forms the inside surface of the box is composed of three strips, 3, 4 and 5, having edge portions that overlap. In the formation of the composite board, the strips are fed with the sheets of corrugated paper 1 and the plane paper 2 that forms the outside of the box between the heated rollers, in a more or less moist condition, so as to unite the strips and the sheet material into a unitary structure. The strip 3 which forms the central strip and extends over the sides of the box when formed, is so fed in the machine that it will lie next to the corrugated surfaces, while the strips 4 and 5 that extend over the flaps of the box when formed, are so fed that their inner edge portions will lie above the edge portions of the strips 3 and so that the edge portions of the strip 3 will lie be tween the inner edge portions of the strips 4i and 5 and the corrugated sheet 1. The overlapping portions of the strips 3, i and 5 extend along the score lines and so that when the strip passes between the scoring rollers the overlapping portions will pass between the ridges and channels of the scoring rollers. The flaps 7 are then formed by making incisions extending from the edges of the composite board to the scored portions. The ends of the composite board are connected together by a suitable strip of cloth after the corners between the sides have been suitably indented in order that the box may be set up.

I claim 1. In a box formed of composite board, the board having a layer of corrugated paper and a layer of plane paper securedto the corrugated paper, and forming the oiitersurfa'ceof the box, and strips of plane paper secured directly to the corrugated paper and forming the inside surface of the*box,'th e strips of plane paper having overlapping edges and the 'board having scored lines extending'alon'g and between the edges'that overlap,the box having flaps formed by incisions extending from the edges of the composite board to the scored lines.

" In a box formed of composite board, the board. having a layer of corrugated paper and a layer of plane paper secured to the corrugated paper, and forming the outer surface of the box, three strips of plane paper secured directly to the corru gated paper. and forming the inside surface oi the box, the strips of plane paper having overlapping edge portions, the board having scored lines extending along and between the overlapping edges, one of the strips extending over the central portion of the board and to a point between the scored lines and the edges of the composite board, and the other two'strips extending from between the scored lines to the edgesof the composite board, the box having flaps formed by incisions extending from the edges of the composite board to the scored lines. d

In testimony whereof I have hereunto signed my name to this specification.

JOHN G. rs'. 

